12128844419 has 2 divisors, whose sum is σ = 12128844420. Its totient is φ = 12128844418.

The previous prime is 12128844341. The next prime is 12128844473. The reversal of 12128844419 is 91444882121.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12128844419 is a prime.

It is a super-2 number, since 2×12128844419² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12128844419.

It is not a weakly prime, because it can be changed into another prime (12128844719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6064422209 + 6064422210.

It is an arithmetic number, because the mean of its divisors is an integer number (6064422210).

Almost surely, 2^12128844419 is an apocalyptic number.

12128844419 is a deficient number, since it is larger than the sum of its proper divisors (1).

12128844419 is an equidigital number, since it uses as much as digits as its factorization.

12128844419 is an evil number, because the sum of its binary digits is even.

The product of its digits is 147456, while the sum is 44.

The spelling of 12128844419 in words is "twelve billion, one hundred twenty-eight million, eight hundred forty-four thousand, four hundred nineteen".